IC 4645

Galaxie
IC 4645
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SDSS-Aufnahme
AladinLite
Sternbild Herkules
Position
Äquinoktium: J2000.0, Epoche: J2000.0
Rektaszension 17h 14m 43,1s [1]
Deklination +43° 06′ 15″ [1]
Erscheinungsbild
Morphologischer Typ Sd[1]
Helligkeit (visuell) 15,1 mag[2]
Helligkeit (B-Band) 15,7 mag[2]
Winkel­ausdehnung 0,40' × 0,4'[2]
Positionswinkel [2]
Inklination °
Flächen­helligkeit 13,0 mag/arcmin²[2]
Physikalische Daten
Zugehörigkeit [1]
Rotverschiebung 0.024724[1]
Radial­geschwin­digkeit 7412 km/s[1]
Hubbledistanz
H0 = 73 km/(s • Mpc) 		(339 ± 24)e6 Lj
(104,0 ± 7,3) Mpc [1]
Absolute Helligkeit mag
Masse M☉
Durchmesser 40.000 Lj[3]
Metallizität [Fe/H]
Geschichte
Entdeckung Edward Emerson Barnard
Entdeckungsdatum
Katalogbezeichnungen
IC 4645 • PGC 59915 • CGCG 225-080 • 2MASX J17144311+4306149 •

IC 4645 ist eine Spiralgalaxie vom Hubble-Typ Sd im Sternbild Herkules am Nordsternhimmel. Sie ist schätzungsweise 339 Millionen Lichtjahre von der Milchstraße entfernt.

Das Objekt wurde von Edward Emerson Barnard entdeckt.[4]

Einzelnachweise

  1. ↑ a b c d e NASA/IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c d e SEDS: IC 4645
  3. ↑ NASA/IPAC
  4. ↑ Seligman

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